Machine fob pricking leatpier preparatory to stitching



UNITED sTATEs PATENT oE-EICE.

j JOS. W. BRIGGS, L. C. CARNER, AND J. S. OARNER, OF PAINESVILLE, OHIO.

MACHINE Eon PEICKING LEATHER PREPAHATOHY To STITOHING, EOE HARNESSI `ANDCOACH MAKERS, sw.

Speccaton of Letters Patent No. 658, dated March 26,` 1838.

\ To all whom it may concern:

Be it known'that we, JOSEPH W. BRIGGS, LUTHER C. CARNER, and JOHN S.OARNEE, all of Painesville, Geauga county, Ohio, have invented a new anduseful Stitching Machine for the Purpose of Stitching Harness,ThorouglrBraces, &c.; and we hereby declare that the following is a fulland exact description.

The nature of our i invention consists in working the awl punchinoftheholes and moving the leather with the action of the foot, and may bedone with any degree ofA rapidity desired by the workman who uses it;

To enable others skilled in the art to make and use our invention wewill proceed to describe its construction and operation.

We construct a bench two feet`8 inches long 8 inches wide at one end and11 inches at the other, the widest end being fitted to answer as a seatfor the workman. The bench is supported by four legs placed near thefour corners two feet in length and standing at an angle so as to placethem 17 inches apart at bottom. The bench is of plank 2 inches thick andthe position of the bench and legs is seen in the annexed draw* ings`Plate No. 1 a a a a a, the legs are connected together by 2 girts oneat each end, Plate l, Z b. On the right hand side (supporting the seatend of the lbench toward you in which position it is always understoodto be) there are two girts placed three inches apart the lower edge ofthe upper of which is 17 inches from the bottom of the bench, and in thelegs on the left hand side is a roller which may have its ends let intothe legs or into pieces of wood attached to the legs, and is placed sothat the center of the roller is on a level with the upper edge of thelower girt in the opposite legsthek two girts are shown plate No. 2Figure 1, a a, and the `roller Fig. 2, a. There is a foot piece one endof which is attached to the roller by two tenons-and is about 19 incheslong and passes between the two girts-in j this foot piece or treadlewhich may be of any requisite width and one inch thick. There are cuttwo mortises or gains to receive the lower ends of the workin `ends-oneis placed 1g inch from the regler and is 3% inches in lengththe other 6%inches from the roller and two inches longw-the position of the footpiece and inortises is shown Plate 1, c. Attached to the bench are twoupright jaws one 15 inches and the other 11 inches-in heightw from thetop of the bench, each 14 inches wide and -g inch thick. These jaws areelevated perpendicularly 'from the bench and firmly attached to it bytenons on the bottom of each passing through corresponding'inortises inthe bench and secured by keys or pins. The jaws are placed within about5 inches of thefnarrow end ofthe bench and are placed angular the left'hand jaw being at the backside set in B- inches from the left side ofthe bench,and the front edge inch. The jaws are placed parallel and twoinches apart with a piece of wood-between them of that thicknessinserted 8 inches from benchthrough which screws pass to keep the jawsfirmlyin their place. VOn the inside of each of the jaws 9` inches fromthe benchis cut aV horizontal groove or mortise 14 inches long an inchwide and Ag ofa-n inch deep to receive the carriage. The position ofthejaws is shown in Plate 2 Figs. 1, andQ, b b. A sliding carriage isconstructed of hard wood 2% feet long consists of two jaws, left handone 7 inches wide and g of an inch thick, right hand one is made of twopieces same thickness, the lower piece 8 inches and the upper piece 4inches wide and attached together by two butts with screws so as to forma joint; The upper and outer edge of these jaws is rounded oif in theform of common` clamps-between these at the lower edge is put a strip ofwood inch deep and inch in thickness, through which the lower portionsof the jaws in the clamps are firmly ,fastened one to the other so asexactly to` lit, and pass between the stationary jaws.`

On the outer side of each of the moving carriage is fastened a strip ofhard wood, the length of the same Qi inch wide and gf inch thick and 1%inches from the lower Aedge so as to fit and move in the groove in thestationary jaws-in the center of the lower side of the carriageits wholelength is cut a groove inch wide and inch deep in which is fastenedacast'iron rack into which the cogwheel meshes and gives Inotion 'to the`carriage-or the rack may be` constructed by wires to correspond withthe cogs in the wheel. The back and upon that is each end of the slidingclams is chamfered down so that the length o the clamps on top is 2 feet1 inch. The position of the carriage or clamps' 1s `shown Plate 1 andPlate 2 Figs. l and 2 c c. There is a horizontal shaft passing betweenthe twofixed jaws 52 inches from the bench and placed Vin the centerhorizontally of tthe jaws-this shaft is 1 inch in diameter when made ofwood, and may be less if of iron.V The ends of the shaft are received inboxes, bored .in the jaws, and the end of the shaft passes through theleft jaw to receive the cog wheel. On this shaft is p-laced a cog wheelof cast kiron L1- inches in diameter with 48 cogs and revolves in thecenter between the jaws, and meshes into the rack on the carriage, Plate2 Figs. 5 and 4:. On the left end of the shaft and outside of andagainst the left stationary jawfisV a brass cog wheel, which is fastenedto the shaft by a screw and washer passing into the ends of the shaft."This wheel is 6` inches indiameter and has 8 notches or cogs to the.`

inch which makes -12V stitches vto the inch and the number may beincreased or diminished-'in proportion to the ineness o f the stitchingrequired-Plate 2 Fig. 2-.a. Above the cogwheel is attached to theoutside of the -left jaw Van elbow being 5 inches in length and isfastened by a'screw above theicenter of the shaft and just clear of thewheel, 2 inches from the end to which the hand is attached-this handatt-ached to the elbow is 3 inches long and is attached to it by a jointallowing perpendicular motion andthe other end ts in and propels theAwheel, the elbow and hand are of iron, to the other endy of the elbow isattached an iron rod by a mortise joint which extends through the benchand is fastened to the footlpiece in the mortise next to the rollerPlate 2, Fig. 2 0. There is a third-screw cut on the lower end of thisrod and a nut is put on it-immediately above and below the foot piece,by which it may be made longer or shorter, and kept firm at its properplace in the mortise, Plate 2 Fig. 3, f. There is also a joint in thelower end of this rod above the screw so that the motion of the footpiece will not affect the position of the rod.

On the right hand side of the stationary jaws at the front side of thejaw at the angle with the bench is fastened a block 2 inches squaretothe outer side of this block is at tached a steel spring 1S incheslong 2` inchesV or this square part may be attached V,to the spring asin Plate 2F ig. 3-a. There iS a cylinder' 1% inches long and l inch indiameter outside with a shank extendingv at right angles Vand 6 inchesmore or less long, linches wide and one-half inch thick at top and inchat bottom, in this shank is cut two perpendicular mortise's one inchlong and it is fastened to the front edge of the right `jaw by screwspassing through the morti'se so that it may be raised up or down. Thereis a horizontal hole bored through the cylinder g inch in diameterthrough which the piston rod passes, Plate 2, Fig. 3, -in the mortise inthe upper part of the sn'ino is a small connecting rod of an inch longwhich is fastened at one end of the mortise by a thumb screw, andat theVother end is connected by a joint fastened also Yby a thumb screw to thepiston rod.

The piston. rod is liinches long and of situation of the spring on theother side, isV

attached by screws a piece of iron 6 inches long 2 inches wideinchtthickat top, in the top of this is cuta mortise or gain l- Vincheslong and 1 inch deep, this iron extends as high as the spring on theother side, and in the mortise is placed a friction wheel inch indiameter and lis inches long over which the strap passes. Plate 2 Fig. 2g, a leather strap l inches wide is attached at one end to the upper endof the spring and passes over the friction wheel and is connected toanother` iron rod passing through the left jaw and bench and is attachedat the other end to the mortse in the foot piece farther from the rollerand confined by a nut on the lower end of the rodthe position of thisstrap and last rod is shown Plate l e e, in the right hand side of theupper part of the carriage jaws, and near the joint are iron boltspassing through that and rmly fastened in the other jaw an equaldistance` from each other, with a thread screw on the outer end of eachis placed a thumb nut block is Hush with the inside of the left jaw isoof the carriage. The use of this is to support the leather when the awlstitches it and a hole is made in the block against the awl to allow itfree passage there is also a channel at the bottom of this block whichprevents the stitches from closing up when made by the awl in theleather Plate l represents the machine entire. Plate 2,. Fig. l is aright hand side view. Fig. 2 a left hand side view. F 3 an end view ofthe machine. Fig. 4 is an enlarged view of a side of the carriage andFig. 5 is anenlarged end view of the carriage. By the action of the footin pressing down the foot piece@ the awl is driven through the leatherto be stitched by the action of the rod attached to the leather strapand at the same time the other rod moves the elbow and lifts the end ofthe hand up one or more notches of the cog wheel as desired when theforce is taken from the foot piece, the spring brings it up against theupper girt draws the awl back and by the motion of the rod and thenthrows the carriage forward if the end of the rod is at the end of themortise in the foot piece next to the roller it moves the cog wheel onenotch, if at the other end of the mortise two notches making in the onecase 12 and in the other 6 stitches to the inch, the machine may be madelarger or smaller at pleasure. This size is suitable for the finest,coarsest and heaviest stitching required in harness making. For heavythorough braces to coaches, the machine should be larger and stronger.

What we claimV as our invention and desire to secure by Letters Patentis- The method of pricking the holes by means of al sliding awloperating in manner substantially as above described and the method ofWorking and regulating the motion of the sliding clamps in combinationas above described.

JOS. W. BRIGGS. LUTHER C. CARNER. JOHN S. CARNER.

Witnesses:

NATHAN DAGGETT, EDWARD A. HUNT.

